package ch04Spring.test.test2;

public class TextPaper implements Paper {
    private int charPerLine=16;//每行字符数
    private int linePerPage=5;//每页行数
    private String content="";//纸张中内容
    private int posX=0;//当横向位置，从0到charPerLine-1
    private int posY=0;//当前行数，从0到linePerPage-1
    private int posP=1;//当前页数
    @Override
    public void putInChar(char c) {
        content+=c;
        ++posX;
        //判断是否换行
        if(posX== getCharPerLine()){
            content+=Paper.newline;
            posX=0;
            ++posY;
        }
        //判断是否翻页
        if(posY== getLinePerPage()){
            content+="==第"+posP+"页 ==";
            content+= Paper.newline+Paper.newline;
            posY=0;
            ++posP;
        }
    }
    //使用set方法注入每行字符数


    @Override
    public String getContent() {
        String ret=this.content;
        //补齐本页空行，并显示页码
        if(!(posX==0&&posY==0)){
            int count= getLinePerPage() -posY;
            for(int i=0;i<count;++i){
                ret+=Paper.newline;
            }
            ret+="==第"+posP+"页==";
        }
        return ret;
    }

    public int getCharPerLine() {
        return charPerLine;
    }

    public void setCharPerLine(int charPerLine) {
        this.charPerLine = charPerLine;
    }

    public int getLinePerPage() {
        return linePerPage;
    }

    public void setLinePerPage(int linePerPage) {
        this.linePerPage = linePerPage;
    }
}
